sleep

Delay for a specified amount of time.

Description

The sleep command pauses the execution for a specified duration.

Syntax

sleep(parameter)

Parameters

Time: Specifies the length of time to pause, including:

• 2s: 2 seconds
• 2m: 2 minutes
• 2h: 2 hours
• 2d: 2 days
• infinity: Permanently

Example

When writing monitoring scripts that run in a loop, setting a time interval is essential. Below is a demonstration of a Shell progress bar script that generates delays.

#!/bin/bash

b=''
for ((i=0;$i<=100;i++))
 do
 printf "Progress:[%-100s]%d%%\r" $b $i
 sleep 0.1
 b=#$b
 done
echo